Home / 23,101.23-31,879.72-12,490.86

Finding the Fourth Proportional to 23,101.23, 31,879.72 and 12,490.86

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Solution

The fourth proportional to 23,101.23, 31,879.72 and 12,490.86 is: 17,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,101.23 : 31,879.72 = 12,490.86 : x
  2. Step 2: Convert to fraction form
    23,101.23/31,879.72 = 12,490.86/x
  3. Step 3: Cross multiply
    23,101.23x = 31,879.72 × 12,490.86
  4. Step 4: Simplify right side
    23,101.23x = 398,205,119.36
  5. Step 5: Solve for x
    x = 398,205,119.36/23,101.23
  6. Step 6: Final answer
    x = 17,237.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.